Abstract
The present study aimed to compare the diagnostic reliability of a pre-set, manufacturer-specific, low-dose mode against a standard-dose mode in the detection of four different osseous lesions in the mandible with cone-beam computed tomography (CBCT). Four types of lesions (periapical lesion, extended periodontal gap, recession of the buccal lamella, sequestrum/fracture) were prepared on 40 pig mandibles. CBCT images were obtained from each mandible, with both the low-dose and standard-dose modes using the Orthophos SL CBCT device (Dentsply-Sirona, Bensheim, Germany). Twelve assessors quantitatively (detection of lesions) and qualitatively (assessment of detectability) evaluated the CBCT images in SIDEXIS 4 (Dentsply-Sirona) using a study-specific digital examination tool. A correct diagnosis was achieved in almost 71% (LD: 70.8%; SD: 70.9%) of 1920 lesions, without a statistically significant difference between the low-dose and standard-dose mode. This finding was consistent across all four lesion types. In conclusion, while low-dose mode and standard-dose mode CBCT scans performed similarly in the detection of four prepared lesions of the mandible, the former may be a promising, user-friendly alternative method of obtaining radiation-optimized, three-dimensional images in accordance with the As Low As Diagnostically Acceptable (ALADA) principle.
Highlights
Low-dose protocols for cone-beam computed tomography (CBCT) have become a promising instrument for dose optimization in three-dimensional (3D) radiological diagnostics of the dentomaxillofacial region [1,2]
The aim of this study was to evaluate the diagnostic accuracy of such a predefined device-specific, low-dose protocol compared to the standard-dose protocol
While low-dose protocols allow be for for minimal exposure, their diagnostic reliability relative to that of standard protocols must minimal exposure, their diagnostic reliability that of standard protocols must of be determined in order to define the indication areasrelative
Summary
Low-dose protocols for cone-beam computed tomography (CBCT) have become a promising instrument for dose optimization in three-dimensional (3D) radiological diagnostics of the dentomaxillofacial region [1,2]. Since its introduction in 1998 [3], CBCT imaging has evolved into a popular radiographic modality in all fields of modern dental medicine [4]. CBCT provides relatively more surgically relevant information than conventional two-dimensional (2D) imaging when applied to oral and maxillofacial traumatology and the assessment of bone pathologies such as osteomyelitis [7]. While superimposition-free imaging of the hard tissue of the facial skull induces less radiation relative to multi-sliced computed tomography [8,9], the applied radiation dose is still higher than that emitted by conventional 2D imaging modalities (panoramic or cephalometric radiography) [10,11]
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